CN102216615B - Multi-stage reciprocating compressor - Google Patents
Multi-stage reciprocating compressor Download PDFInfo
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- CN102216615B CN102216615B CN200980145983.5A CN200980145983A CN102216615B CN 102216615 B CN102216615 B CN 102216615B CN 200980145983 A CN200980145983 A CN 200980145983A CN 102216615 B CN102216615 B CN 102216615B
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- cylinder
- rudimentary
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- discharge port
- pumping chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1037—Flap valves
- F04B53/104—Flap valves the closure member being a rigid element oscillating around a fixed point
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
Abstract
A multi-stage reciprocating compressor includes a cylinder block and a cylinder head. The cylinder block defines a low stage cylinder and a high stage cylinder. The cylinder head is secured to the cylinder block overlying the low and high stage cylinders. The cylinder head defines a mid-stage plenum which is in fluid communication with the low stage cylinder and the high stage cylinder for communicating a working fluid discharged from the low stage cylinder to the high stage cylinder.
Description
Technical field
The present invention relates to reciprocal compressor assembly by and large, and more particularly, relates to the multistage compressor with two or more cylinder.
Background technique
Compressor in many coolings, heating or refrigeration system for compressing the refrigerant fluid through this systemic circulation.In the case of a reciprocating compressor, motor or engine rotation bent axle, the to-and-fro motion of the one or more pistons in one or more cylinder actuated by bent axle.Low pressure refrigerant enters compressor by the entry port in compressor housing, and can temporarily be contained in the reservoir chamber limited by housing.Then low pressure refrigerant from reservoir chamber to be sucked in cylinder by a path (multiple path) and by one or more piston compression to higher temperature and pressure.The higher pressure refrigerant gas of discharging from one or more cylinder is left reciprocal compressor by the outlet port in cylinder cap or housing and is flow to other component of cooling, heating or refrigeration system.
In multistage reciprocating compressor, the refrigerant fluid from one or more rudimentary cylinder discharge is sucked into one or more senior cylinder by another path (multiple path).Refrigerant gas is compressed further by the one or more pistons in senior cylinder.By reciprocal compressor is divided into multiple level, can more efficiently compressed refrigerant to more high pressure more attainable than single-stage reciprocal compressor.
For the component in many mechanical systems, usually need to keep the size of the compressor in heating or cooling system and weight minimum, design this unit simultaneously, to make this system, there is appearance energy high as far as possible and efficiency.Path between level in many conventional multistage reciprocal compressors needs the pipe fitting in compressor outside or pipeline to be communicated with refrigeration agent between compressor stage.Regrettably, outer tube or pipeline can be vibration and high and low frequency noise source.External pipe also increases size and the gross weight of compressor.External pipe also forms extra contacts, and these joints can have leakage possibility and increase additional parts, and additional parts needs additional fabrication steps, comprises and being assembled on compressor housing by pipeline.
Summary of the invention
A kind of multistage reciprocating compressor comprises cylinder body and cylinder cap.Cylinder body limits rudimentary cylinder and senior cylinder.Cylinder cap is fixed on cylinder body, covers rudimentary cylinder and senior cylinder.Cylinder cap limits intermediate pumping chamber, and this intermediate pumping chamber and rudimentary cylinder are communicated with senior cylinder fluid and are used for the working fluid discharged from rudimentary cylinder to be transported to senior cylinder.
Accompanying drawing explanation
Fig. 1 is the side view of an embodiment of multistage reciprocating compressor.
Figure 1A is the side cross-sectional, view of the multistage reciprocating compressor of Fig. 1.
Fig. 2 is the perspective exploded view of a part for the multistage reciprocating compressor shown in Fig. 1 and Figure 1A.
Fig. 3 is the perspective view of the cylinder body shown in Fig. 2 and suction valve.
Fig. 4 is the perspective view of the cylinder cap shown in Fig. 2, its senior pumping chamber rudimentary pumping chamber, intermediate pumping chamber being shown and being with discharge port.
Fig. 5 A is the top view of the valve plate of Fig. 2, and it illustrates the multiple paths through valve plate.
Fig. 5 B is the bottom perspective view of the valve plate of Fig. 5 A, and it has and is assembled in bottom gasket on valve plate and is closely placed in valve plate lower portion and contacts the suction valve of valve plate bottom.
Fig. 5 C is the top perspective of the valve plate of Fig. 5 A, and it has and is assembled in embodiment in which top gasket on valve plate and some escape cocks.
Embodiment
Compressor 10 is summarized
Fig. 1 illustrates the side view of an embodiment of multistage reciprocating compressor 10.This reciprocal compressor 10 comprises housing 12, mounting plate 14, motor end cap 16, bearing head assembly 18, valve plate 20 and cylinder cap 22.Housing 12 comprises motor part section 24, crankcase 26 and cylinder body 28.Motor end cap 16 comprises ingress port 30.Cylinder body 28 comprises intermediate port 32.Cylinder cap 22 comprises senior outlet port 34.
Compressor 10 comprises housing 12, and housing 12 and mounting plate 14 interconnect.Housing 12 is extending transverse to from receiving the first end of motor end cap 16 the second end receiving bearing head assembly 18.Valve plate 20 and cylinder cap 22 are fixed to housing 12 top.The motor part section 24 of housing 12 suspends relative to mounting plate 14 and receives motor end cap 16.Motor part section 24 on mounting plate 14 horizontal expansion to interconnect with crankcase 26 part of housing 12.Cylinder body 28 and crankcase 26 interconnect and have a common boundary with valve plate 20.Ingress port 30, intermediate port 32 and senior outlet port 34 extend respectively through motor end cap 16, cylinder body 28 and cylinder cap 22.
Mounting plate 14 and/or housing 12 are suitable for allowing compressor 10 bolt or being otherwise bonded to flat on the surface, on such as floor.Bearing head assembly 18 is received bent axle (it is placed in compressor 10) and is provided the access path of compressor 10 internals.Motor part section 24 is held and is protected most of internals of compressor 10 together with crankcase 26.
Low pressure refrigerant enters motor part section 24 by the ingress port 30 in motor end cap 16.Refrigeration agent is drawn into crankcase 26 from motor part section 24 by the to-and-fro motion of the one or more pistons in cylinder body 28.Refrigeration agent to be sucked into by the inner plenum that formed by cylinder body 28, valve plate 20 and cylinder cap 22 and transit system from crankcase 26 and to be formed at rudimentary cylinder cylinder body 28 and senior cylinder.Valve (itself and valve plate 20 interact) control refrigeration agent from or to the flowing of rudimentary cylinder and senior cylinder.Rudimentary piston in rudimentary cylinder and senior cylinder and the to-and-fro motion of senior piston in multiple level compressed refrigerant to the higher temperature in multistage and pressure.In one embodiment, refrigeration agent is transported to the additional member of heating or cooling system by intermediate port 32 (in one or more rudimentary cylinder after compression).These components can comprise (such as) extra compressor or heat exchanger.Usually, after leaving one or more rudimentary cylinder, refrigeration agent is sucked in one or more senior cylinder, and wherein refrigeration agent is further compressed.After leaving this one or more senior cylinder, high-pressure refrigerant is discharged into other component of heating or cooling system by senior outlet port 34.
Figure 1A illustrates the side cross-sectional, view of multistage reciprocating compressor 10.Except housing 12, mounting plate 14, motor end cap 16, bearing head assembly 18, valve plate 20 and cylinder cap 22, this compressor 10 comprises: motor 36, bent axle 38 and oil purifier or oil pipe line 40, oil groove 42, rudimentary piston 44A and 44B and senior piston 44C.Cylinder body 28 comprises rudimentary cylinder 46A and 46B, and senior cylinder 46C.Bent axle 38 comprises eccentric part 48, and piston 44A to 44C is connected to this eccentric part 48.
The suspension motor part section 24 of housing 12 receives motor 36, and motor 36 is placed in motor part section 24.Motor 36 and bent axle 38 interconnect and bent axle 38 are rotated, and bent axle 38 is laterally placed in housing 12.Bent axle 38 to extend transverse in crankcase 26 from motor 36 and is supported on the bearing bearing head assembly 18.With at compressor 10 inner sealing motor 36 and bent axle 38 in the motor part section 24 that motor end cap 16 is fixed to housing 12.The bottom of oil purifier or oil pipe line 40 to be placed in oil groove 42 and to be communicated with bearing head assembly 18.Oil groove 42 is limited by the lower inside of crankcase 26 and the inside, top of mounting plate 14.
Piston 44A, 44B and 44C and bent axle 38 interconnect and are reciprocally driven by bent axle 38.More specifically, piston 44A, 44B and 44C are along the eccentric part 48 of bent axle 38 in axial interconnection, and bent axle 38 is placed in crankcase 26.The cylinder body 28 of housing 12 is positioned to the head receiving piston 44A, 44B and 44C respectively in cylinder 46A, 46B and 46C.
Lubricant oil from oil groove 42 is carried to lubricate the moving link of such as bent axle 38 by a part for oil purifier or oil pipe line 40 by bearing head assembly 18.Oil groove 42 is contained in the overlubricate oil used in compressor 10.In one embodiment, bearing head assembly 18 can be configured to hold positive displacement oil pump, and positive displacement oil pump aspirates lubricant oil by oil purifier 30 from oil groove 42 and forces oil by path in bent axle 38 and piston 44A, 44B and 44C or groove.
The part of the crankcase 26 of flexing axle 38 limits reservoir, and reservoir temporarily holds the low pressure refrigerant be drawn in compressor 10 by the reciprocating of piston 44A, 44B and the 44C in cylinder 46A, 46B and 46C.Before low pressure refrigerant enters reservoir, first refrigeration agent is aspirated by the ingress port 30 in motor end cap 16.Ingress port 30 is arranged in permission adjacent with motor 36 in motor end cap 16 and aspirates on the stationary part of motor 36 and around the stationary part of motor 36 from the refrigeration agent heated or other component of cooling system enters the lower pressure, lower temperature of compressor 10.In this construction, refrigeration agent provides the extra cooling to motor 36.
Cylinder 46A, 46B and 46C extend through cylinder body 28 and receive the head of piston 44A, 44B and 44C respectively.In one embodiment, cylinder 46A, 46B and 46C along the axial length of the part with bent axle 38 at radially adjoining and the axis jointly extended be arranged in " straight line ".Housing 12, valve plate 20 and cylinder cap 22 are constructed such that the low pressure refrigerant in reservoir is communicated with 46C fluid with cylinder 46A, 46B.Valve optionally contacts valve plate 20 and passes in and out cylinder 46A, 46B and 46C to regulate flow of refrigerant.Therefore, in compressor 10 operation period, low pressure refrigerant to be optionally drawn in cylinder 46A, 46B and 46C from reservoir and to be compressed to more high pressure by the to-and-fro motion of piston 44A, 44B and 44C in cylinder 46A, 46B and 46C.Refrigeration agent discharges from cylinder 46A, 46B and 46C after being compressed to higher temperature and pressure.
In order to realize the compression to refrigeration agent, the bar or the connecting rod that comprise the inner radial portions of piston 44A, 44B and 44C are configured to have shaft bearing, and the converting rotary motion of bent axle 38 is become the linear motion of piston 44A, 44B and 44C in cylinder 46A, 46B and 46C by shaft bearing.In one embodiment, the part extending to the bent axle 38 in reservoir is constructed to eccentric 50A, 50B and 50C of the spin axis relative to bent axle 38.Eccentric part 48 allows piston 44A, 44B and 44C at cylinder 46A, 46B and 46C internal linear to-and-fro motion intended distance.More specifically, eccentric part 48 and the radial distance of the rotational axis offset of bent axle 38 determine the linear range of the stroke of each piston 44A, 44B and 44C.Piston 44A, 44B and 44C stroking distance is from being determine that compressor 10 is by refrigeration agent suction and the factor (also have multiple other factors, some of them comprise such as number of pistons, piston head diameter, motor horsepower and crankshaft rotating speed) of capacity being compressed to more high pressure.
The to-and-fro motion of piston 44A, 44B and 44C in cylinder 46A, 46B and 46C causes piston " stroke cycle ".Stroke cycle comprises suction or enters stroke, is wherein drawn in cylinder 46A, 46B and 46C by refrigeration agent by the linear motion of piston 44A, 44B and 44C.Punching Cheng Xunhuan also comprises compression and discharge stroke, is wherein compressed and refrigerant emission by the Linear-moving of piston 44A, 44B and 44C in cylinder 46A, 46B and 46C.
In figure ia, the structure of eccentric part 48 allows each piston 44A, 44B and 44C to be positioned to separate crankshaft rotating 120 degree substantially.The crankshaft rotating degree of each piston 44A, 44B and 44C positioned in spaced apart determines that each piston 44A, 44B and 44C are in the position of any particular moment.Equally, the crankshaft rotating degree of each piston 44A, 44B and 44C positioned in spaced apart determines each piston 44A, 44B and 44C direction of linear motion at any time.In other embodiment of multistage reciprocating compressor, such as, with the multistage reciprocating compressor of two cylinders and two pistons, piston can be placed in other number of degrees not separating crankshaft rotating 120 degree substantially.
Cylinder body 28, cylinder cap 22 and valve plate 20 limit refrigerant flow paths and pumping chamber (operation of its operation and valve will discuss in more detail in the description subsequently) makes piston 44A, 44B and 44C and cylinder 46A, 46B and 46C can be characterized by rudimentary or senior based on the refrigerant pressure advancing into cylinder 46A, 46B and 46C of the compression stroke at piston 44A, 44B and 44C.The head of rudimentary piston 44A with 44B is placed in rudimentary cylinder 46A and 46B be communicated with reservoir fluid the lower pressure refrigeration agent making rudimentary cylinder 46A and 46B be received from reservoir to aspirate.Equally, the head of senior piston 44C is placed in the senior cylinder 46C be communicated with 46B fluid with rudimentary cylinder 46A the more high pressure refrigeration agent making senior cylinder 46C be received from rudimentary cylinder 46A and 46B to discharge.
Rudimentary piston 44A and 44B and rudimentary cylinder 46A and 46B is positioned to closer to bearing head assembly 18 and is extending radially outwardly from bent axle 38.Senior piston 44C and senior cylinder 46C is positioned to adjacent with motor 36, and is therefore illustrated as rightmost piston in figure ia.In other embodiments, the position of senior piston 44C and senior cylinder 46C can be different from rudimentary piston 44A and 44B and rudimentary cylinder 46A and 46B.In the multistage reciprocating compressor 10 shown in Figure 1A, each piston 44A, 44B have substantially similar piston head diameter with 44C.
Such as, but in other embodiments, two cylinders/two-piston multistage reciprocating compressor, the piston head diameter of senior piston can be different from the piston head diameter of rudimentary piston.
The component of crankcase 26
Fig. 2 is the perspective exploded view that the component be placed in above compressor 10 cylinder body 28 is shown.Except cylinder cap 22, valve plate 20, cylinder body 28 and cylinder 46A, 46B and 46C, these components comprise: suction valve assembly 50A, 50B and 50C, lower gasket 52, bleed valve assembly 54A, 54B and 54C, upper gasket 56 and fastening piece 58.
Cylinder body 28 limits cylinder 46A, 46B and 46C of extending through a part for cylinder body 28.In cylinder 46A, 46B and 46C, the upper axial end portion of each extends through the outer surface of cylinder body 28.The top surface of cylinder body 28 receives suction valve assembly 50A, 50B and 50C, and it is shown in Figure 2 for flexible strip valve.When assembling with when being placed in " closedown " position, the top surface that each suction valve assembly 50A, 50B and 50C are placed in cylinder body 28 extends the bottom of the one or more refrigerant flow paths optionally covering valve plate 20 on cylinder one of 46A, 46B and 46C.Adjacent with suction valve assembly 50A, 50B and 50C upon assembly on the top that lower gasket 52 is placed in cylinder body 28.More specifically, lower gasket 52 is configured to have the top being placed in cylinder 46A, 46B and 46C top and suction valve assembly 50A, 50B and 50C, and radially around cylinder 46A, 46B and 46C top and suction valve assembly 50A, 50B and 50C.
Valve plate 20 to be placed in the lower gasket 52 above cylinder body 28 and to interact with suction valve assembly 50A, 50B and 50C.The top surface of valve plate 20 receives bleed valve assembly 54A, 54B and 54C of being mounted thereon.Be similar to suction valve assembly 50A, 50B and 50C, in one embodiment, bleed valve assembly 54A, 54B and 54C are flexible strip valve portions.Upon assembly, upper gasket 56 is placed on the upper surface of valve plate 20, adjacent with bleed valve assembly 54A, 54B and 54C.Upper gasket 56 is configured to the part of the base portion (and being in contact with it) of the inner and outer wall had corresponding to cylinder cap 22.Cylinder cap 22 to be placed in lower gasket 52 above cylinder body 28.Cylinder cap 22, upper gasket 56, valve plate 20 and lower gasket 52 are fixed on cylinder body 28 by fastening piece 58.
Ideally, lower gasket 52 is formed around suction valve assembly 50A, 50B and 50C and around the sealing barrier of each cylinder 46A, 46B and 46C above each cylinder 46A, 46B and 46C, make cylinder 46A, 46B and 46C only with the partial fluid communication of the valve plate 20 defined by lower gasket 52.In addition, lower gasket 52 prevents refrigeration agent between cylinder body 28 and valve plate 20, leaking into air around compressor 10 ideally.Equally, upper gasket 56 prevents refrigeration agent ideally between the inwall and valve plate 20 of cylinder cap 22 or from the air leaked between valve plate 20 and the outer wall of cylinder cap 22 around compressor 10.
Valve plate 20 limits flow passage or port (it is arranged and function will discuss in more detail subsequently in the description), and flow passage or port are provided in pumping chamber and are communicated with the fluid between cylinder 46A, 46B and 46C.Optionally forbid during each suction valve assembly 50A, 50B and 50C and bleed valve assembly 54A, 54B and 54C are formed at a part for the stroke cycle of piston 44A, 44B and 44C or impact the one or more flowing in the flow passage of refrigeration agent in valve plate 20.Cylinder cap 22 limits the top (it is arranged and composition graphs 3 and Fig. 4 launch to describe by function) of pumping chamber, and the path of pumping chamber temporarily in valve plate 20 receives refrigeration agent.If compressor 10 uses " group " structure, (be also referred to as " V structure ", wherein cylinder 46A, 46B and 46C and piston 44A, 44B and 44C (Figure 1A) are along two independent planar alignment), multiple cylinder cap 24 can be used to cover many group cylinder bodies 40.
Cylinder body 28 and suction valve assembly 50A, 50B and 50C
Fig. 3 illustrates the top of cylinder body 28 and the perspective view of suction valve assembly 50A, 50B and 50C.Cylinder body 28 limits rudimentary pumping chamber 60, the bottom of intermediate pumping chamber 62A and backstop recess 64.Suction valve assembly 50A, 50B and 50C comprise pin 66A, 66B and 66C and compliant member 68A, 68B and 68C.Compliant member 68A, 68B and 68C comprise most advanced and sophisticated 70A, 70B and 70C.
Cylinder body 28 is given prominence to from piston portion section 16 top of compressor 10.In one embodiment, cylinder body 28 has the top surface of flat.Except limiting cylinder 46A, 46B and 46C, cylinder body 28 also limits the bottom of rudimentary pumping chamber 60 and intermediate pumping chamber 62A.
Rudimentary pumping chamber 60 extends through cylinder body 28 and is communicated with reservoir fluid.The bottom of middle rank pumping chamber 62A to extend in cylinder body 28 but terminates in predetermined depth, makes the bottom of intermediate pumping chamber 62A be the chamber surrounded by cylinder body 28.The bottom of middle rank pumping chamber 62A is communicated with (Fig. 2) with the upper flow of the intermediate pumping chamber limited by cylinder cap 22.
Cylinder body 28 is configured to be had and each adjacent aperture for acceptance pin 66A, 66B and 66C in cylinder 46A, 46B and 46C.Compliant member 68A, 68B and 68C of suction valve assembly 50A, 50B and 50C are fixed to cylinder body 28 by pin 66A, 66B and 66C.Upon assembly, compliant member 68A, 68B and 68C suspends from the base portion of acceptance pin 66A, 66B and 66C at the axial end portion of each cylinder 46A, 46B and 46C.In closed position, compliant member 68A, 68B and each in 68C extend to contact on cylinder 46A, 46B with the axial end portion of one of 46C and covering extends through one or more inhalation flow path of valve plate 20 or multiple port ideally.In cylinder 46A, 46B and 46C, the antelabium of each is configured to have one or two backstop recess 64, and backstop recess 64 is placed in the bore open of acceptance pin 66A, 66B and 66C substantially to opposite position.Only when suction valve assembly 50A, 50B and 50C are in an open position, in compliant member 68A, 68B and 68C, each antelabium 70A, 70B and 70C are bonded on the backstop recess 64 in cylinder body 28.
In compressor 10 operation period, by the induction stroke of rudimentary piston 44A and 44B in rudimentary cylinder 46A and 46B, refrigeration agent is drawn in rudimentary pumping chamber 60 from reservoir.Rudimentary pumping chamber 60 is also communicated with 46B selectivity fluid with rudimentary cylinder 46A by valve plate 20, and valve plate 20 allows refrigeration agent to enter rudimentary cylinder 46A and 46B from rudimentary pumping chamber 60.
Equally, middle rank pumping chamber 62A in bottom is communicated with 46B selectivity fluid with rudimentary cylinder 46A by valve plate 20.The refrigeration agent discharged from rudimentary cylinder 46A and 46B during the compression and discharge stroke of rudimentary piston 44A and 44B enters the upper and lower of intermediate pumping chamber 62A.The bottom of middle rank pumping chamber 62A is also communicated with senior cylinder 46C selectivity fluid by valve plate 20.This allows to be drawn in senior cylinder 46C from the bottom of intermediate pumping chamber 62A by refrigeration agent by the top of intermediate pumping chamber during the induction stroke of senior piston 44C.In one embodiment, intermediate port 32 is positioned to and is communicated with the upper flow of intermediate pumping chamber 62B.Middle rank port 32 allows the refrigeration agent compressed by rudimentary piston 44A and 44B be delivered to the additional member of heating or cooling system or carry from the additional member of heating or cooling system.These components can comprise (such as) extra compressor or heat exchanger.
As indicated previously, in one embodiment, flexible member 68A, 68B and 68C are leaf valve and comprise thin plate spring material, and it allows the top of parts 68A, 68B and 68C flexure or distortion turnover cylinder 46A, 46B and 46C upon assembly during operation.The base portion acceptance pin 66A of compliant member 68A, 68B and 68C, 66B and 66C, compliant member 68A, 68B and 68C to be fixed in cylinder 46A, 46B and 46C the position above each by pin 66A, 66B and 66C.Pin 66A, 66B and 66C prevent compliant member 68A, 68B and 68C from disseating or moving to opposite side from side ideally during the stroke cycle of piston 36.As leaf valve, compliant member 68A, 68B and 68C pressure reduction owing to generating on valve in opening direction, is opened by flexure and moves to " opening " position from normally closed position (describing above) and operate.Therefore, when suction valve assembly 50A, 50B and 50C, the induction stroke of the piston 36 in cylinder 46A, 46B and 46C forms pressure reduction on compliant member 68A, 68B and 68C, and this pressure reduction makes compliant member 68A, 68B and 68C temporarily bend or is deformed in the top of cylinder 46A, 46B and 46C and opens.
(and crankshaft rotating 120 degree is substantially separated due to piston 36 when suction valve assembly 50A, 50B and 50C open, opening of each suction valve assembly 50A, 50B and 50C can not occur simultaneously), most advanced and sophisticated 70A, 70B and 70C of compliant member 68A, 68B and 68C are bonded on the backstop recess 64 in cylinder body 28 after opening motion on a small quantity.Then because compliant member 68A, 68B and 68C are in most advanced and sophisticated 70A, 70B and 70C and the flexure between pin 66A, 66B and 66C or bend and in all the other times of induction stroke, valve 50A, 50B and 50C occur and to be opened to further in cylinder 46A, 46B and 46C in each.After completion of an intake stroke and during the discharge and compression stroke of piston 36, compliant member 68A, 68B and 68C turn back to and contact and cover the closed position not curved substantially extending through the inhalation flow path of valve plate 20 ideally.
Cylinder cap 22
Fig. 4 is the bottom perspective view of an embodiment of cylinder cap 22.Except rudimentary pumping chamber 60 and 62B top, intermediate pumping chamber, cylinder cap 22 limits senior pumping chamber 72.More specifically, the outer wall 74 of cylinder cap 22 and inwall 76 limit pumping chamber 60,62B and 72 tops.
The view of the cylinder cap 22 shown in Fig. 4 illustrates the top of the rudimentary pumping chamber 60 limited by cylinder cap 22, intermediate pumping chamber 62B and senior pumping chamber 72.Pumping chamber 60,62B and 72 also can be limited by valve plate 20 and cylinder body 28.More specifically, outer wall 74 limits pumping chamber 60, the top of 62B and 72 and the sealing barrier be formed between the refrigeration agent of compression and air.Inwall 76 also separates hermetically and limits pumping chamber 60,62B and 72.Each pumping chamber 60,62B or 72 hold refrigeration agent, and refrigeration agent has the temperature and pressure different from the temperature and pressure being contained in the refrigeration agent of each in other pumping chamber 60,62B or 72.Senior outlet port 34 in cylinder cap 22 allow refrigeration agent from senior pumping chamber 72 through cylinder cap 22 to heating or cooling system other component.Hole is limited by outer wall 74 and inwall 76 and extends vertically through these features substantially.Fastening piece 58 (Fig. 2) is received in hole, and cylinder cap 22, upper gasket 56, valve plate 20 and lower gasket 52 are fixed on cylinder body 28 (Fig. 2) by fastening piece 58.
Valve plate 20 and bleed valve assembly 54A, 54B and 54C
Fig. 5 A is the top view of an embodiment of valve plate 20, removes bleed valve assembly 54A, 54B and 54C.Valve plate 20 limits rudimentary pumping chamber path 78, rudimentary inhalation port 80A and 80B, rudimentary discharge port 82A and 82B, middle rank pumping chamber path 84, senior inhalation port 86, senior discharge port 88, valve orifice 90A, 90B and 90C, and pin-and-hole 92A, 92B and 92C.
Valve plate 20 limit extend through valve plate 20 to allow in pumping chamber 60, multiple paths of the refrigerant flow communication of 62B and 72 and cylinder 46A, 46B and 46C (Fig. 2).More specifically, the generic cylindrical rudimentary pumping chamber path 78 being depicted as top left cylindrical passage in fig. 5 extends through valve plate 20.Rudimentary inhalation port 80A and 80B also extends through valve plate 20, adjacent with rudimentary pumping chamber path 78.In rudimentary inhalation port 80A and 80B, each terminates in each close vicinity in rudimentary cylinder 46A and 46B and in rudimentary cylinder 46A and 46B above each.
Adjacent with rudimentary inhalation port 80A and 80B, rudimentary discharge port 82A and 82B extend through valve plate 20 and be positioned so that when valve plate 20 is assembled on cylinder body 28 in rudimentary discharge port 82A and 82B at least one to terminate in one of rudimentary cylinder 46A and 46B close vicinity and above one of rudimentary cylinder 46A and 46B.Middle rank pumping chamber path 84 extends through valve plate 20, adjacent with rudimentary discharge port 82A and 82B, and is provided for device that 62B top, intermediate pumping chamber is communicated with 62A bottom, intermediate pumping chamber.Senior inhalation port 86 also extends through valve plate 20 and is positioned to when cylinder cap 22 is assembled on valve plate 20 and is communicated with intermediate pumping chamber 62B.In one embodiment, senior inhalation port 86 and rudimentary discharge port 82A and 82B are placed in the same side of the axis of symmetry of valve plate 20.
Senior discharge port 88 also extends through valve plate 20.When valve plate 20 is constructed such that proper valve plate 20 is assembled on cylinder body 28, senior discharge port 88 terminates in senior cylinder 46C close vicinity and above senior cylinder 46C.Valve plate 20 also limits valve orifice 90A, 90B and 90C and pin-and-hole 92A, 92B and 92C, and pin-and-hole 92A, 92B and 92C are suitable for acceptance pin and screw, and suction valve assembly 54A, 54B and 54C are fixed on valve plate 20 top by pin and screw.In one embodiment, senior discharge port 88 and rudimentary discharge port 80A and 80B are placed in the same side of the axis of symmetry of valve plate 20.
When cylinder cap 22 is assembled on valve plate 20, rudimentary pumping chamber path 78 allows refrigeration agent to flow between the bottom, rudimentary pumping chamber 60 limited by cylinder body 28 and the top, rudimentary pumping chamber 60 limited by cylinder body 22.Equally, rudimentary inhalation port 80A with 80B allows refrigeration agent to be communicated with from rudimentary pumping chamber 60 to the fluid of rudimentary cylinder 46A with 46B.Refrigeration agent flows to 62B top, intermediate pumping chamber from rudimentary cylinder 46A and 46B by rudimentary vent pathway 82A and 82B.
In one embodiment, the upper surface of valve plate 20 in rudimentary discharge port 82A and 82B each radially outer and with each adjacent and senior discharge port 88 in rudimentary discharge port 82A and 82B by milling or otherwise machining form circular channel.At circular channel and vent pathway 82A and 82B, valve plate 20 upper surface in 88 between each forms seat, and when being in " closedown " impact flow position, bleed valve assembly 54A, 54B and 54C are held on this seat.Because oil film remains, circular channel reduces suction valve assembly 54A, 54B and 54C adhesion to valve plate 20.Suction valve assembly 54A, 54B and 54C is allowed more effectively to open during this compression at piston 36 and discharge stroke.
Refrigeration agent is flowed between the bottom of the intermediate pumping chamber 62A limited by cylinder body 28 and the top of intermediate pumping chamber 62B limited by cylinder body 22 by intermediate pumping chamber path 84.Equally, senior inhalation port 86 allows refrigeration agent to flow to senior cylinder 46C from 62B top, intermediate pumping chamber and senior discharge port 88 allows refrigeration agent to flow to senior pumping chamber 72 from senior cylinder 46C.
Fig. 5 B is the bottom perspective view of an embodiment of valve plate 20, and wherein cylinder body 28 is cancelled thus the assembled arrangement of suction valve assembly 50A, 50B and 50C and lower gasket 52 is shown.Because lower gasket 52 is configured to have the top that is placed in cylinder 46A, 46B and 46C (Fig. 2) top and suction valve assembly 50A, 50B and 50C and radially around cylinder 46A, 46B and 46C (Fig. 2) top and suction valve assembly 50A, 50B and 50C, the observer of Fig. 5 B should be appreciated that the layout of cylinder 46A, 46B and 46C is defined by the central part of lower gasket 52.Therefore, when valve plate 20 is assembled on cylinder body 28, the layout of lower gasket 52 on valve plate 20 is relevant to cylinder body 46A, 46B and 46C layout below valve plate 20.When valve plate 20 is assembled on cylinder body 28, suction valve assembly 50A, 50B and 50C and rudimentary and senior discharge port 82A, 82B, 88 relevant relative to the layout of cylinder 46A, 46B and 46C to these features relative to the layout of lower gasket 52.When valve plate 20 is assembled on cylinder body 28, axis X-X extends along the axis of symmetry of valve plate 20 substantially and will to extend through in cylinder 46A, 46B and 46C the center of each.
In one embodiment, rudimentary discharge port 82A and 82B and senior inhalation port 86 (Fig. 5 A) are aimed at substantially and are placed in the same side of X-X axis.Equally, rudimentary inhalation port 80A and 80B (Fig. 5 A) and senior discharge port 88 are aimed at substantially and are placed in the same side of X-X axis.Rudimentary discharge port 82A becomes specular with senior discharge port 88 relative to X-X axis with 82B, on the side making rudimentary discharge port 82A and 82B be placed in X-X axis and senior discharge port 88 be placed on the opposite side of X-X axis.
In figure 5b, suction valve assembly 50A, 50B and 50C are all illustrated in the closed position, and compliant member 68A, 68B contact with each in 68C and cover inhalation flow port 80A and 80B, 86 (Fig. 5 A).At open position, the pressure reduction on compliant member 68A, 68B and 68C will make compliant member 68A, 68B and 68C be bent downwardly or be out of shape, and compliant member 68A, 68B and 68C no longer be covered or contact inhalation flow port 80A and 80B, 86.Rudimentary discharge flow path and senior discharge flow path 82A and 82B, 88 extend through valve plate 20, adjacent with suction valve assembly 50A, 50B and 50C.When valve plate 20 and lower gasket 52 are assembled on cylinder body 28, each rudimentary and senior discharge flow path 82A and 82B, 88 is placed in close vicinity above cylinder one of 46A, 46B and 46C in the radial space limited by lower gasket 52.This allows rudimentary discharge flow path to be communicated with 46C fluid with cylinder 46A, 46B with 82B, 88 with senior flowing vent pathway 82A.
Fig. 5 C illustrates the top perspective of an embodiment of valve plate 20, and wherein cylinder body 28 is cancelled thus the assembled arrangement of bleed valve assembly 54A, 54B and 54C and upper gasket 56 is shown.Due to when cylinder cap 22 is assembled on valve plate 20, upper gasket 56 is held on inwall 74 and outer wall 76 (Fig. 4) below of cylinder cap 22, the observer of Fig. 5 C will recognize the layout being defined inwall 74 and outer wall 76 by upper gasket 56, and inwall 74 and outer wall 76 limit pumping chamber 60,62B and 72.Therefore, when cylinder cap 22 is assembled on valve plate 20, the layout of upper gasket 56 on valve plate 20 and pumping chamber 60, the layout of 62B and 72 above valve plate 20 are relevant.When cylindrical cover 22 is assembled on valve plate 20, bleed valve assembly 54A, 54B and 54C and rudimentary inhalation port and senior inhalation port 80A, 80B, 86 relevant relative to the layout of pumping chamber 60,62B and 72 to these features relative to the layout of upper gasket 56.Axis X-X extends along the axis of symmetry of valve plate 20 substantially.
In one embodiment, rudimentary discharge port 82A and 82B (Fig. 5 B) and senior inhalation port 86 are aimed at substantially and are placed in the same side of X-X axis.Equally, rudimentary inhalation port 80A and 80B and senior discharge port 88 (Fig. 5 B) are aimed at substantially and are placed in the same side of X-X axis.
In figure 5 c, two in bleed valve assembly 54A and 54B all illustrate in the closed position, and the part contact of valve 54A and 54B cover discharge flow path 82A and 82B, 88 (Fig. 5 A).A bleed valve assembly 54C illustrates with exploded view the component that bleed valve assembly 54A, 54B and 54C are shown better.These components comprise flapper (flapper) component 94, backing member 96, screw 98, pin 100 and lock washer 102.Bleed valve assembly 54A and 54B comprises the component similar with bleed valve assembly 54C.
When cylinder cap 22 and valve plate 20 be assembled in cylinder body 28 (Fig. 2) upper time, bleed valve assembly 54A and 54B (its be arranged in above rudimentary cylinder 46A and 46B and adjacent with rudimentary inhalation flow port 80A and 80B) is placed in intermediate pumping chamber 62B.When cylinder cap 22 and valve plate 20 are assembled on cylinder body 28, bleed valve assembly 54C to be placed in above senior cylinder 46C in senior pumping chamber 72.
Be similar to suction valve assembly 50A, 50B and 50C, bleed valve assembly 54A, 54B and 54C comprise the flapper component 94 being operating as leaf valve.The flapper component 94 of bleed valve assembly 54A, 54B and 54C comprises thin plate spring material, its allow flapper component 94 away from cover discharge flow path 82A and 82B, 88 closed position flexure or distortion.Different from suction valve assembly 50A, 50B and 50C, bleed valve assembly 54A, 54B and 54C comprise backing member 96, and backing member 96 limits the motion of flapper component 94 and is suitable for by the breaking force be applied on flapper component 94 that dissipates from the refrigeration agent of discharge flow path 82A and 82B, 88 discharges.When flapper component 94 moves to " opening " position away from valve plate 20, each backing member 96 is configured to provide sufficient space for refrigeration agent rigidly from backing member 96 and flapper component 94 down discharge.Flapper component 94 and backing member 96 are fixed on valve plate 20 by screw 98, pin 100 and lock washer 102.The base portion of each flapper component 94 and each backing member 96 is suitable for receiving one of screw 98, and screw 98 extends through these components and lock washer 102, and lock washer 102 is received in one of valve orifice 90A, 90B and 90C limited by valve plate 20.Equally, the base portion of flapper component 94 and backing member 96 is suitable for one of acceptance pin 100, and pin 100 extends through these components and is received in pin-and-hole one of 92A, 92B and 92C of being limited by valve plate 20.
The operation of compressor 10
In compressor 10 operation period, low pressure refrigerant is drawn in the bottom of the rudimentary pumping chamber 60 that cylinder body 28 as shown in Figure 2 limits from reservoir.From the bottom of rudimentary pumping chamber 60, refrigeration agent passes through by the induction stroke of each in rudimentary piston 44A and 44B the top that rudimentary pumping chamber path 78 (Fig. 5 A to Fig. 5 C) is drawn into rudimentary pumping chamber 60 further.In rudimentary piston 44A and 44B, refrigeration agent is also drawn in each in rudimentary cylinder 46A and 46B by rudimentary inhalation port 80A and 80B by the induction stroke of each.
Separate crankshaft rotating 120 degree substantially because rudimentary piston 44A and 44B is positioned to, for each rudimentary piston 44A and 44B, the starting of induction stroke will come across not in the same time.Equally, for each rudimentary piston 44A and 44B, induction stroke will terminate in not in the same time.Suction valve assembly 50A and 50B above rudimentary cylinder 46A and 46B temporarily will bend or bend to open and to allow refrigeration agent to enter rudimentary cylinder 46A and 46B by rudimentary inhalation port 80A and 80B.Due to the pressure reduction that the induction stroke of rudimentary piston 44A and 44B each in each rudimentary cylinder 46A and 46B is formed, the temporary transient flexure of each suction valve assembly 50A and 50B or bendingly to come across not in the same time.Because two rudimentary piston 44A and 44B separate crankshaft rotating 120 degree substantially, suction valve assembly 50A with 50B above rudimentary cylinder 46A with 46B will open lasting about crankshaft rotating 60 degree at suction valve assembly 50A, 50B together with before one of 50C closedown simultaneously.Suction valve assembly 50A and 50B is not turning back to closed position in the same time, covers and impacts the flow of refrigerant by each rudimentary inhalation port 80A and 80B.Before a suction valve assembly is opened, two suction valve assembly 50A with 50B close lasting about 60 degree of crankshaft rotating together with simultaneously.
The starting of the compression of each rudimentary piston 44A and 44B and discharge stroke betides (relative to bent axle 38) when this piston starts outward radial linear motion.During each rudimentary piston 44A and 44B compression and discharge stroke, the refrigeration agent received during its induction stroke in rudimentary cylinder 46A and 46B is compressed to higher temperature and pressure.During compression and discharge stroke, suction valve assembly 50A and 50B above rudimentary cylinder 46A and 46B turns back to closed position, covers each rudimentary inhalation port 80A and 80B.The refrigeration agent being now compressed to higher temperature and pressure begins through in corresponding rudimentary discharge port 82A and 82B in the different moment that each discharges from each rudimentary cylinder 46A and 46B.
More specifically, the pressure reduction (being caused by rudimentary piston 44A and 44B compressed refrigerant) on flapper component 94A and 94B in bleed valve assembly 54A and 54B on each becomes and is enough to open flapper component 94A and 94B and is not transmitting refrigeration agent in the same time to allow each bleed valve assembly 54A and 54B.Be similar to each in suction valve assembly 50A and 50B, before bleed valve assembly is closed, together with bleed valve assembly 54A with 54B incites somebody to action, open about 60 degree of lasting crankshaft rotating simultaneously.
With open bleed valve assembly 54A and 54B simultaneously, refrigeration agent (it is impacted in rudimentary vent pathway 82A and 82B by bleed valve assembly 54A, 54B and 54C) is discharged in the top middle rank pumping chamber 62B that limited by the inwall 74 of valve plate 20 and cylinder cap 22 and outer wall 76.Temporarily to reside in intermediate pumping chamber 62A and 62B period at refrigeration agent, refrigeration agent by intermediate pumping chamber path 84 in the 62B bottom, intermediate pumping chamber limited by valve plate 20 and cylinder body 28.
Then the refrigerant fluid be temporarily contained in intermediate pumping chamber 62A and 62B is drawn in senior cylinder 46C by senior inhalation port 86 by the induction stroke of senior piston 44C.
By rudimentary discharge port 82A and 82B being positioned to the part of the valve plate 20 be communicated with by the restriction identical with senior inhalation port 86 middle rank pumping chamber 62B, avoiding and separating the external pipe between rudimentary discharge plenum and senior discharge plenum at port 82A and 82B and 86 and routine.The discharge limited by the pumping chamber in valve plate 20 and cylinder cap 22 equally and the structure of inhalation port allow bleed valve assembly 54A and 54B above rudimentary cylinder 46A and 46B to be only placed in intermediate pumping chamber 62B.
The layout of rudimentary discharge port 82A and 82B, senior inhalation port 86 and valve allows refrigeration agent optionally to flow to senior cylinder 46C and pipeline without the need to being used in cylinder cap 22 or housing 22 outside from rudimentary cylinder 46A and 46B.Elimination outer tube or pipeline decrease the potential source that compressor 10 vibrates.The minimizing that compressor 10 vibrates makes to flow with the refrigeration in external pipe the high and low frequency noise decrease be associated.The elimination of external pipe also reduces size and the gross weight of compressor 10, and decreases compressor 10 number of spare parts.The minimizing of compressor components 10 also makes manufacture and the number of steps needed for assemble compressible machine 10 reduce.
Separate crankshaft rotating 120 degree substantially because senior piston 44C is positioned to the rudimentary piston 44B with center, for senior piston 44C and the rudimentary piston 44B in center, induction stroke start to come across not in the same time.Equally, for senior piston 44C and rudimentary piston 44A and 44B in center, induction stroke will terminate in the different moment.Suction valve assembly 50C temporarily will bend or bend to open and to allow refrigeration agent to enter senior cylinder 46C by senior inhalation port 86.For each suction valve assembly, temporary bend or the flexure of suction valve assembly 50A, 50B and 50C start and end at not in the same time.Because senior piston 44C and rudimentary piston 44A and 44B of central authorities separates crankshaft rotating 120 degree substantially, suction valve assembly 50B with 50C will before suction valve assembly is closed together with open lasting about crankshaft rotating 60 degree simultaneously.Owing to offseting 120 degree, bent axle substantially between piston 44A, 44B and 44C, all these three suction valve assemblies 50A, 50B and 50C will open the time period of lasting any prolongation during difference.
When senior piston 44C starts outwards to move in senior cylinder 46C, senior piston 44C starts compression stroke.The compression stroke of senior piston 44C is also compressed in the refrigeration agent that receives in senior cylinder 46C to even higher temperature and pressure during induction stroke.During the compression and discharge stroke of senior piston 44C, the suction valve assembly 50C of top turns back to closed position, covers each senior suction passage 86.The refrigeration agent being now compressed to even higher temperature and more high pressure starts not discharged from senior cylinder 46C by corresponding senior discharge port 88 in the same time when refrigeration agent discharges from rudimentary cylinder 46A and 46B.
More specifically, the pressure reduction (being caused by rudimentary piston and senior piston 44A-44C compressed refrigerant) in bleed valve assembly 54A, 54B and 54C on each flapper component 94 becomes to be enough to open flapper component 94 and allow each bleed valve assembly not transmitting refrigeration agent in the same time.Bleed valve assembly 54B close before, bleed valve assembly 56C by with center rudimentary cylinder 46B above bleed valve assembly 54B open lasting about crankshaft rotating 60 degree simultaneously.
With open bleed valve assembly 54C simultaneously, refrigeration agent (it is impacted in senior discharge port 88 by bleed valve assembly 54C) is discharged in the senior pumping chamber 72, top that limited by the inwall 74 of valve plate 20 and cylinder cap 22 and outer wall 76.From top, senior pumping chamber 72, refrigeration agent is discharged into by senior outlet port 34 (it is communicated with senior pumping chamber 72 fluid) other component heated or in cooling system.
Although describe the present invention with reference to one exemplary embodiment, it will be understood by a person skilled in the art that and can to make a variety of changes when not departing from scope of the present invention and equivalent can be used for replacing element of the present invention.In addition, many amendments can be made and adapt to instruction content of the present invention to make particular condition or material when not departing from essential scope of the present invention.Therefore, the present invention is not intended to be limited to disclosed specific embodiment, but the present invention will comprise all embodiments fallen in the scope of appended claims.
Claims (20)
1. a multistage reciprocating compressor, comprising:
Cylinder body, it limits rudimentary cylinder and senior cylinder; And
Cylinder cap, it is fixed on described cylinder body, cover described rudimentary cylinder and senior cylinder, described cylinder cap limits the top of intermediate pumping chamber, described cylinder body limits the bottom of described intermediate pumping chamber, and described intermediate pumping chamber and rudimentary cylinder are communicated with senior cylinder fluid and are used for the working fluid discharged from described rudimentary cylinder to be transported to described senior cylinder.
2. multistage compressor according to claim 1, it is also included in the valve plate between described cylinder body and described cylinder cap.
3. multistage compressor according to claim 1, is characterized in that, the discharge port of described rudimentary cylinder and the inhalation port of described senior cylinder are placed in the same side of the axis extending through the center of each in described rudimentary cylinder and senior cylinder.
4. multistage compressor according to claim 1, is characterized in that, the inhalation port of described rudimentary cylinder and the discharge port of described senior cylinder are placed in the same side of the axis extending through each center in described rudimentary cylinder and senior cylinder.
5. multistage compressor according to claim 1, characterized by further comprising and be placed in described intermediate pumping chamber for escape cock that the fluid optionally impacted from described rudimentary cylinder is communicated with.
6. multistage compressor according to claim 1, is characterized in that, described cylinder body limits the chamber be communicated with the intermediate pumping chamber fluid limited by described cylinder cap.
7. multistage compressor according to claim 1, is characterized in that, described cylinder body limits the second rudimentary cylinder be communicated with described intermediate pumping chamber fluid.
8. multistage compressor according to claim 2, is characterized in that, the discharge port of described rudimentary cylinder and the inhalation port of described senior cylinder extend through described valve plate and be placed in the same side of the axis of symmetry of described valve plate.
9. multistage compressor according to claim 2, is characterized in that, the inhalation port of described rudimentary cylinder and the discharge port of described senior cylinder extend through described valve plate and be placed in the same side of the axis of symmetry of described valve plate.
10. multistage compressor according to claim 1, it is characterized in that, the discharge port of described rudimentary cylinder and the discharge port of described senior cylinder become specular about the axis extending through the center of each in rudimentary cylinder and senior cylinder, on the side making one of described discharge port be placed in described axis and another discharge port be placed on the opposite side of described axis.
11. 1 kinds of multistage reciprocating compressors, comprising:
Cylinder body, it limits rudimentary cylinder and senior cylinder; And
Cylinder cap, it is fixed on described cylinder body, and cover described rudimentary cylinder and senior cylinder, described cylinder cap limits the top of intermediate pumping chamber, and described cylinder body limits the bottom of described intermediate pumping chamber; And
Valve plate, it to be placed between cylinder cap and cylinder body and to be defined through the discharge port of its rudimentary cylinder and the inhalation port of senior cylinder, and the discharge port of described rudimentary cylinder and the inhalation port of described senior cylinder allow to be transported to described senior cylinder from the working fluid of described rudimentary cylinder discharge by described intermediate pumping chamber.
12. multistage compressors according to claim 11, is characterized in that, the discharge port of described rudimentary cylinder and the inhalation port of described senior cylinder are aimed at substantially in the same side of axis extending through the center of each in described rudimentary cylinder and senior cylinder.
13. multistage compressors according to claim 11, is characterized in that, the inhalation port of described rudimentary cylinder and the discharge port of described senior cylinder are aimed at substantially in the same side of axis extending through the center of each in described rudimentary cylinder and senior cylinder.
14. multistage compressors according to claim 11, characterized by further comprising and be placed in described intermediate pumping chamber for escape cock that the fluid optionally impacted from described rudimentary cylinder is communicated with.
15. multistage compressors according to claim 11, is characterized in that, described cylinder body limits the chamber be communicated with the intermediate pumping chamber fluid limited by described cylinder cap.
16. multistage compressors according to claim 11, is characterized in that, described cylinder body limits the second rudimentary cylinder, and described second rudimentary cylinder is communicated with described intermediate pumping chamber fluid by the second discharge port in described valve plate.
17. multistage compressors according to claim 11, it is characterized in that, the discharge port of described rudimentary cylinder and the discharge port of described senior cylinder become specular about the axis extending through the center of each in described rudimentary cylinder and senior cylinder, on the side making one of described discharge port be placed in described axis and another discharge port be placed on the opposite side of described axis.
18. multistage compressors according to claim 11, is characterized in that, the discharge port of described rudimentary cylinder and the inhalation port of described senior cylinder are placed in the same side of the axis of symmetry of described valve plate.
19. 1 kinds of multistage reciprocating compressors, comprising:
Cylinder body, it limits rudimentary cylinder and senior cylinder; And
Cylinder cap, it is fixed on described cylinder body, cover described rudimentary cylinder and senior cylinder, described cylinder cap limits the top of intermediate pumping chamber, described cylinder body limits the bottom of described intermediate pumping chamber, described intermediate pumping chamber is communicated with senior cylinder fluid with described rudimentary cylinder with the inhalation port of described senior cylinder by the discharge port of described rudimentary cylinder, and described discharge port and described inhalation port are placed in the same side of the axis extending through the center of each in described rudimentary cylinder and senior cylinder.
20. multistage compressors according to claim 19, it is characterized in that, the discharge port of described rudimentary cylinder and the discharge port of described senior cylinder become specular about the axis extending through the center of each in rudimentary cylinder and senior cylinder, on the side making one of described discharge port be placed in described axis and another discharge port be placed on the opposite side of described axis.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9810208P | 2008-09-18 | 2008-09-18 | |
| US61/098102 | 2008-09-18 | ||
| PCT/US2009/057153 WO2010033589A2 (en) | 2008-09-18 | 2009-09-16 | Multi-stage reciprocating compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102216615A CN102216615A (en) | 2011-10-12 |
| CN102216615B true CN102216615B (en) | 2015-07-22 |
Family
ID=42040112
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980145983.5A Expired - Fee Related CN102216615B (en) | 2008-09-18 | 2009-09-16 | Multi-stage reciprocating compressor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9382906B2 (en) |
| EP (1) | EP2331817A4 (en) |
| CN (1) | CN102216615B (en) |
| RU (1) | RU2011109755A (en) |
| WO (1) | WO2010033589A2 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7753894B2 (en) | 2004-04-27 | 2010-07-13 | Smith & Nephew Plc | Wound cleansing apparatus with stress |
| WO2009066106A1 (en) | 2007-11-21 | 2009-05-28 | Smith & Nephew Plc | Wound dressing |
| GB201015656D0 (en) | 2010-09-20 | 2010-10-27 | Smith & Nephew | Pressure control apparatus |
| US9084845B2 (en) | 2011-11-02 | 2015-07-21 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
| US9835156B2 (en) | 2012-01-12 | 2017-12-05 | Carrier Corporation | Sealing arrangement for semi-hermetic compressor |
| US20130213506A1 (en) * | 2012-02-20 | 2013-08-22 | Microjet Technology Co., Ltd | Fluid transportation device |
| MX2014011314A (en) | 2012-03-20 | 2014-10-17 | Smith & Nephew | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination. |
| US9427505B2 (en) | 2012-05-15 | 2016-08-30 | Smith & Nephew Plc | Negative pressure wound therapy apparatus |
| CN203809628U (en) * | 2013-12-12 | 2014-09-03 | 北京中清能发动机技术有限公司 | Round sliding block, round sliding block set, internal-combustion engine, compressor and plunger pump |
| WO2016103032A1 (en) | 2014-12-22 | 2016-06-30 | Smith & Nephew Plc | Negative pressure wound therapy apparatus and methods |
| SG11201708710YA (en) | 2015-05-13 | 2017-11-29 | Carrier Corp | Economized reciprocating compressor |
| US11519395B2 (en) | 2019-09-20 | 2022-12-06 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Turbine-driven fracturing system on semi-trailer |
| CN110485982A (en) | 2019-09-20 | 2019-11-22 | 烟台杰瑞石油装备技术有限公司 | A kind of turbine fracturing unit |
| CN113047916A (en) | 2021-01-11 | 2021-06-29 | 烟台杰瑞石油装备技术有限公司 | Switchable device, well site, control method thereof, switchable device, and storage medium |
| US11702919B2 (en) | 2019-09-20 | 2023-07-18 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Adaptive mobile power generation system |
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- 2009-09-16 CN CN200980145983.5A patent/CN102216615B/en not_active Expired - Fee Related
- 2009-09-16 EP EP20090815115 patent/EP2331817A4/en not_active Withdrawn
- 2009-09-16 WO PCT/US2009/057153 patent/WO2010033589A2/en active Application Filing
- 2009-09-16 RU RU2011109755/06A patent/RU2011109755A/en not_active Application Discontinuation
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| US3136478A (en) * | 1962-04-11 | 1964-06-09 | Worthington Corp | Multi-stage compressor with annular ring valve service |
| US5078580A (en) * | 1991-03-29 | 1992-01-07 | Dresser-Rand Company | Plural-stage gas compressor |
| CN2359485Y (en) * | 1998-11-12 | 2000-01-19 | 成都市金星化工机械厂 | Energy-saving piston type compressor without balance segment |
| US6488480B1 (en) * | 2001-05-11 | 2002-12-03 | Carrier Corporation | Housing for screw compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2331817A4 (en) | 2015-05-06 |
| RU2011109755A (en) | 2012-10-27 |
| US20110171044A1 (en) | 2011-07-14 |
| WO2010033589A2 (en) | 2010-03-25 |
| US9382906B2 (en) | 2016-07-05 |
| CN102216615A (en) | 2011-10-12 |
| WO2010033589A3 (en) | 2010-06-17 |
| EP2331817A2 (en) | 2011-06-15 |
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